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Eberspacher Heater Airtronic Comparison - April 2026
| 1 Best Choice  9.8Exceptional | 2  9.7Exceptional |
| View DealOn Amazon | View DealOn Amazon |
ModelEberspacher Espar Airtronic S2 D2 L 12V 2.2kW 7500BTU with EasyStart PRO 7 Day Timer with Fault Display and Automatic Altitude Adjustment includes RV Muffler Silencer and Floor Mounting Plate | Model Eberspacher Airtronic Heater Kit AS3 B2L (Gasoline) 12V |
BrandEberspächer | Brand Eberspächer |
Reviews | Reviews |
Available On | Available On |
Our Top 2 Picks
Here are the top 2 recommended products with more information to help you find the right product for you
9.8
1EberspächerEberspacher Espar Airtronic S2 D2 L 12V 2.2kW 7500BTU with EasyStart PRO 7 Day Timer with Fault Display and Automatic Altitude Adjustment includes RV Muffler Silencer and Floor Mounting Plate
Why we love it
Diesel powered for efficient heating
Automatic altitude adjustment up to 3000m
Real time temperature monitoring for optimal heating
Main highlights- Webasto diesel heater
- Van diesel air heater
- Truck diesel heater
- Gasoline bunk heater
- Gas van heater
- Espar diesel heater
- Eberspacher air diesel heater
- Diesel furnace for van
- Diesel bunk heater
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9.7
2Eberspächer
Eberspacher Airtronic Heater Kit AS3 B2L (Gasoline) 12V
Why we love it
Compact design allows easy installation under passenger seat.
Operates in extreme temperatures and high altitudes effortlessly.
Quieter performance with stepless blower and brushless fan.
Main highlights- The stepless blower system also ensures quieter performance compared to previous models, while the dampened fuel pump piston reduces clicking noise. The Eberspacher B2L also sports a brushless fan which helps to further reduce noise.
- The heater’s fuel system plugs directly into your vehicle’s fuel system or tank with a standpipe or via an auxiliary tap (if your vehicle manufacturer offers one). Installation of the fuel system has been simplified for this model, with the same line used for the whole installation.
- The brushless fan ensures the Eberspacher B2L has a long operating life, increasing service time from 3k hours (on previous models) up to 5k hours. And if there are any issues, the new controller communication system allows more accurate on-screen fault diagnostics.
- The Eberspacher B2L is highly versatile when it comes to installation. Its adaptable ducting system, which can go up to 15 meters / 49ft in length, features outlets of either 60mm or 75mm. Ducting outlets are closable and can have different degree grilles and outlet types, plus the number of outlets can be varied based on the complexity of the ducting system.
- The Eberspacher B2L is engineered to operate in extreme conditions and high altitudes. It can operate in temperatures as low as -46°C / - 50°F and at altitudes of up to 18K feet. This is possible thanks to its integrated altitude sensor, and unlike earlier models there is no additional wiring or installation required for high altitude operation.
- The Eberspacher B2L is easier to install than previous models. It features plug and play installation which requires fewer tools, enabling DIY installation.
- The Eberspacher B2L AS3 is compatible with all 3 communication protocol technologies used by Eberspacher - CAN, LIN and S+. This means you can use your earlier generation controller with the Eberspacher B2L
- Start up power consumption has been reduced compared to previous AS2 models.
- Controlling the heater is simple because it has an integrated temperature sensor. The Eberspacher B2L’s stepless blower system enables optimized heating control and maximizes performance efficiency.
- Compact design for convenient installation, i.e. Under passenger seat. New AS3 B2L is smaller in size than B4L, and same size as Airtronic D2.
Our ranking system
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Features
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Consumer Reviews
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Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
